wireless back-up possible?

Hello,
Can anyone advise about setting up a wireless back up solution.
Essentially I want to have a back-up drive hidden somewhere in the house, and using .mac's BackUp, have it just wirelessly shunt my MBP backup on to it periodically.
Is that possible?
Thank you.

MacRumors attracts a broad audience
of both consumers and professionals interested in
the latest technologies and products. We also boast an active community focused on
purchasing decisions and technical aspects of the iPhone, iPod, iPad, and Mac platforms.